function Food(){
  this.x = Math.floor(Math.random() * WIDTH);
  this.y = Math.floor(Math.random() * HEIGHT);
  this.area = FOOD_AREA;

  this.color = [
    Math.round(Math.random() * 255),
    Math.round(Math.random() * 255),
    Math.round(Math.random() * 255)
  ];

  foods.push(this);
}

Food.prototype = {
  /** Display the player on the field */
  show: function(){
    var radius = Math.sqrt(this.area / PI);

    fill(this.color[0], this.color[1], this.color[2]);
    noStroke();
    ellipse(this.x, this.y, radius);
  },

  /** Restart from new position */
  restart: function(){
    this.x = Math.floor(Math.random() * WIDTH);
    this.y = Math.floor(Math.random() * HEIGHT);
  },

};